UGF's where the filter recommendation in the past. In fact I think kevin will tell you his first saltwater tank was setup with a UGF back in the day.
As jacob metioned they are not desirable as the CC or sand particles will clog the slits in the filter eventually and thus negate their usefulness since they need water flow to work effectivly.
A DSB and 1 - 1.5lbs of LR per gal is really all the filter you need.